Home / 51,420.32-70,965.27-31,278.59

Finding the Fourth Proportional to 51,420.32, 70,965.27 and 31,278.59

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Solution

The fourth proportional to 51,420.32, 70,965.27 and 31,278.59 is: 43,167.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,420.32 : 70,965.27 = 31,278.59 : x
  2. Step 2: Convert to fraction form
    51,420.32/70,965.27 = 31,278.59/x
  3. Step 3: Cross multiply
    51,420.32x = 70,965.27 × 31,278.59
  4. Step 4: Simplify right side
    51,420.32x = 2,219,693,584.57
  5. Step 5: Solve for x
    x = 2,219,693,584.57/51,420.32
  6. Step 6: Final answer
    x = 43,167.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.